Modulator circuits; Transmitter circuits

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Modulated-carrier systems > Phase-modulated carrier systems, i.e. using phase-shift keying > Modulator circuits; Transmitter circuits

CPC:

Modulated-carrier systems > Phase-modulated carrier systems, i.e. using phase-shift keying (H04L27/32 takes precedence) > Modulator circuits; Transmitter circuits

Of 3 combined children, 0 exist in both systems.

3 codes are CPC-only extensions.

Child Classifications

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H04L 27/2003 +2 CPC CPC only CPC only
H04L 27/2032 +3 CPC CPC only CPC only
H04L 27/2096 CPC only CPC only